Replace desktop navigation bar with hamburger menu, cart icon and instagram logo at top left hand (Squarespace 7.1)

I have used this code to get the hamburger icon instead of navigation bar:

.header-burger { display:flex!important}
.header--menu-open .header-menu {opacity: 1!important;visibility: visible!important;}
.header-nav, .header-actions {visibility:hidden!important}
@media screen and (min-width:768px) {
.header-burger {
    order: 2;
}
}
 

However, it has made the cart and instagram icons disappear.

Does anyone have any idea how to fix this?

Thanks,

Claudia